iOS 8 adds third-party access to camera data via an API

Apple is adding over 4000 new APIs (Application Programming Interfaces) to iOS 8, and one with user-facing implications is a new camera API. The latest camera API will give third-party apps access to deeper hardware control of the camera, meaning you can install an app from the App Store that can handle manual control of exposure, white balance and more, as well as make non-destructive edits to photos that you've already taken.